package com.qk.management.web.interceptor;

import com.qk.common.util.CurrentUserContextHolders;
import com.qk.common.util.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import java.util.Objects;

/**
 * @author Just、倾城
 * @created 2025-10-11
 * @description
 *
 */
@Slf4j
@Component

public class LoginCheckInterceptor implements HandlerInterceptor {
    private static final String TOKEN_HEADER_NAME = "token";
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
          //获取请求头中的token
        String token = request.getHeader(TOKEN_HEADER_NAME);
          //   判断token是否为空->Optional 强制判空容器 ！
        if(Objects.isNull( token)){
            log.info("请求头中没有token");
            response.setStatus(HttpStatus.UNAUTHORIZED.value());
            return false;
        }

        try {
            Claims claims = JwtUtil.parseToken(token);
            log.info("-----token验证成功--------");
            String username = claims.get("username", String.class);
            log.info("-----用户信息是：{}--------",username);
            Integer id = claims.get("id", Integer.class);
            log.info("-----用户id是：{}--------",id);
            CurrentUserContextHolders.set(id);
            return true;
        } catch (Exception e) {
            log.info("-----token验证失败--------");
            response.setStatus(HttpStatus.UNAUTHORIZED.value());
            return false;
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        CurrentUserContextHolders.remove();
    }
}
